I thought bitcoinhackers might like this: a display of lock mechanisms from the 1500’s, seen in the Rijksmuseum in the Netherlands. There are some pretty wild designs in there.

How to guard valued possessions is a timeless question. Some things change, others stay the same!

A funny Bitcoin.SE question:
Can the fees in a coinbase (tx) be used to launder Bitcoins?

"Just asking for a friend", right OP? :p

bitcoin.stackexchange.com/ques

The Bitfi wallet is being heavily promoted in my Twitter feed, lots of sponsored posts recently.
They're basically promoting a hardware brainwallet, I'm surprised I haven't seen more outrage at this yet.

"This committee essentially has nothing to do with bitcoin at all. It is another "blockchain not bitcoin" effort which can only do damage to Bitcoin. It is initiated by people who are unable to accept the concept that nobody is in charge and nobody decides the rules. If they were interested in bitcoin they would be contributing on github and the mailing lists."

+1

bitcoin.stackexchange.com/ques

This is neat, pi showing up in a physical system. The explanation video is great, 3Blue1Brown is awesome.

youtube.com/watch?v=HEfHFsfGXj

Random musing: perhaps some of the 'messenger app coins' will help the adoption of Bitcoin, as users are presented with an easy on-ramp through a service they already use. After gaining familiarity with using a 'cryptocurrency', making the switch to Bitcoin will be easier.

This article is fairly idiotic, but it prompted my thoughts:

nytimes.com/2019/02/28/technol

Also, I'm kinda surprised to hear Signal is making its own coin? For no real reason, I thought they'd know better? Hm

My LND node routed a payment today, for the first time in the 9+ months I've had it online, netting me 1 sat in fees.

The routing pushed one channel's balance almost entirely to one side, and then that channel was closed out... hmm. Opening a channel costs more than 1 sat in fees... kind of a funny situation there.

Ah well. For some reason routing a payment feels exciting. I'll call that worth the few cents opening a new channel will cost.

Arguing about the block size in relation to fees seems to be endlessly in vogue.

If fees are the issue, why is there no discussion about creating wallets that can coordinate to slowly raise fees, instead of just 'doubling the fee rate then hitting broadcast'?

Am I missing something obvious here?

Is there any interesting work being done on optimizing the Bitcoin fee market? Has anyone explored the idea of allowing wallets to talk/coordinate on the issue?

Of course that doesn't allow an *absolute* 'solution', but it certainly couldn't hurt efficiency. The end of 2017 was a brilliant display of bad fee estimation algorithms, to me this seems like an under-talked about part of the tech. I find that a little surprising, considering how core it is to the user experience.

Came across Veem today, a service which is kinda interesting. At first I rolled my eyes at their mentions of 'using blockchain technology' to send payments, but upon further investigation it turns out they just partner with various international Bitcoin brokers to buy/sell in and out of BTC, in order to cross borders with less intermediary banks involved. Users still deal only in fiat, but its funny to see that BTC allows their backend to be more efficient in some ways.

veem.com

Oh wow! Sounds like Canadian Bitcoin exchange QuadrigaCX lost access to their cold storage?

"For the past weeks, we have worked extensively to address our liquidity issues, which include attempting to locate and secure our very significant cryptocurrency reserves held in cold wallets, and that are required to satisfy customer cryptocurrency balances [...] Unfortunately, these efforts have not been successful."

quadrigacx.com/

Typo, missed an important word there: *turn your phone into a microphone they can listen in on*

ATTN: iOS users: there is a serious Facetime vulnerability in iOS 12.1, which allows someone to basically turn your phone into a that they can listen in on, without you having answered a call. Probably best to just turn Facetime off until this is patched.

9to5mac.com/2019/01/28/facetim

If I ever re-toot something odd, it was probably an accidental/errant thumb click while scrolling through the federated timeline on mobile.

(I just looked at my profile, and found some retoot from a Bible account. Safe to say, not intentional lol. Sry about that)

"Technologists claimed that taint tracking was hard, as they assumed that taint would mix and dilute when coins are joined; yet the relevant case law specifies first-in-first-out tracking, which turns out to be technically easy."

Umm... does 'easy' matter, when the results are absolutely inaccurate? Why do some people have such a hard time understanding that trying to force Bitcoin to adhere to the incumbent systems will simply not work?

cl.cam.ac.uk/~rja14/Papers/bit

BitcoinTalk is accepting Grin donations (this is the first time they've accepted something that isn't BTC, which seems notable).

bitcointalk.org/index.php?topi

I haven't followed along too closely, but the Grin tech does seem interesting. Bootstrapping a currency is no small feat, in any case.

So, BitcoinHackers, give me your Grin opinions!

Showerthought:
Ethereum marketed itself as the 'unstoppable world computer', but maybe it would have done better to use 'the world's most expensive computer' instead.

I guess you could just make that the slogan for any 'smart-contract focused blockchain', really.

Blockchain facepalms & lols:

Celebrating that the company behind your favourite blockchain is moving to a 'crypto friendly jurisdiction'? Nice try, but you've rather sorely missed the point of all this.

This is the article linked:
bitcoinist.com/wyoming-governo

But the real lols are a link within that article:
beefchain.com/

Why is 'supply chain tracking' still a blockchain meme? Does nobody involved in these ventures understand what a dumb idea it is?

There are some good LN questions being posted to Bitcoin.SE lately. This one is interesting, its about the technical nuances of sub-satoshi LN transactions:

bitcoin.stackexchange.com/ques

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